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Computer sometimes doesn't turn on
After installing a new telephone modem I wasn't able to start the computer after pressing the on/off button. Nothing happened, as if there was no power. I pressed the power cable firmly and some other cables too. Suddenly the computer started running, but it wasn't clear to me after which action. The computer came up with the message "CMOS checksum error, BIOS defaults loaded" and started windows xp. After turning off the computer, I wasn't able to start the computer again. I decided to open the case but I didn't notice any loose circuits or something. I reassembled the computer and guess what, it started running, but it displayed the message "CMOS checksum error, BIOS defaults loaded" again! What confuses me is the CMOS-checksum error - if it is just a poor on/off switch or something, then I do not expect such a error. After all, CMOS does have its own battery to keep its values. Some more info: - motherboard is a P6SET-ML - Intel Celeron 600 Mhz processor Any idea's? Thanks in advance! On Mon, 21 Feb 2005 00:04:40 +0100, "Shiva"
<shiva***@hotmail.com> wrote: Show quoteHide quote >Hi, After it'd displayed the checksum error, did you go into the> >After installing a new telephone modem I wasn't able to start the computer >after pressing the on/off button. Nothing happened, as if there was no >power. >I pressed the power cable firmly and some other cables too. Suddenly the >computer started running, but it wasn't clear to me after which action. The >computer came up with the message "CMOS checksum error, BIOS defaults >loaded" and started windows xp. >After turning off the computer, I wasn't able to start the computer again. I >decided to open the case but I didn't notice any loose circuits or >something. >I reassembled the computer and guess what, it started running, but it >displayed the message "CMOS checksum error, BIOS defaults loaded" again! > >What confuses me is the CMOS-checksum error - if it is just a poor on/off >switch or something, then I do not expect such a error. After all, CMOS does >have its own battery to keep its values. > >Some more info: >- motherboard is a P6SET-ML >- Intel Celeron 600 Mhz processor bios menus and (even if you change nothing) save the settings? I suggest you at least set the clock, so if the battery is bad enough it will be obvious because the clock is wrong/reset later. Check the battery too. _IF_ you get the system running stabily, I suggest updating the bios, as thoose PCChips/ECS boards typically have quite buggy bios. > Yes, I had to set to clock again, it was set at the year 2000 and month> After it'd displayed the checksum error, did you go into the > bios menus and (even if you change nothing) save the > settings? I suggest you at least set the clock, so if the > battery is bad enough it will be obvious because the clock > is wrong/reset later. Check the battery too. > other than february. I didn't have to change anything in the bios, the clock had been set through windows xp. > _IF_ you get the system running stabily, I suggest updating I had already done that, I've got the most recent version.> the bios, as thoose PCChips/ECS boards typically have quite > buggy bios. On Mon, 21 Feb 2005 09:52:07 +0100, "Shiva"
<shiva***@hotmail.com> wrote: >> Probably dead battery>> After it'd displayed the checksum error, did you go into the >> bios menus and (even if you change nothing) save the >> settings? I suggest you at least set the clock, so if the >> battery is bad enough it will be obvious because the clock >> is wrong/reset later. Check the battery too. >> >Yes, I had to set to clock again, it was set at the year 2000 and month >other than february. >I didn't have to change anything in the bios, the clock had been set through >windows xp. > Probably dead battery I think so too, but does a dead cmos battery also prevent the computer to> > power on at all? > Death CMOS battery, try to replace it. A dead CMOS battery explains the CMOS checksum error.. I guess that's> obvious. But does a dead battery also cause the computer not to turn on at all? On Mon, 21 Feb 2005 09:54:46 +0100, "Shiva"
<shiva***@hotmail.com> wrote: > It "can". Depends on the board, some will and some won't.>> Death CMOS battery, try to replace it. >> >A dead CMOS battery explains the CMOS checksum error.. I guess that's >obvious. But does a dead battery also cause the computer not to turn on at >all? >
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"kony" <spam@spam.com> wrote in message Thanks. I'll try get myself a new battery and hopefully I solves the problemnews:plbj1154gr7qvf6to01qf2kjo6hmsa50rr@4ax.com... > On Mon, 21 Feb 2005 09:54:46 +0100, "Shiva" > <shiva***@hotmail.com> wrote: > > > > >> Death CMOS battery, try to replace it. > >> > >A dead CMOS battery explains the CMOS checksum error.. I guess that's > >obvious. But does a dead battery also cause the computer not to turn on at > >all? > > > > It "can". Depends on the board, some will and some won't. for once and for all... Measure the voltage to the battery with a multimeter and you'll know
whether or not it needs replacement. If you don't have a multimeter try connecting a flashlight bulb and see if it lights. I've never heard of a mb not powering up simply because the battery was dead, but maybe it's possible. My experience with the infamous ECS K7S5A mb and its bios has taught me to avoid ECS completely. -- Show quoteHide quoteJan Alter bear***@verizon.net or jal***@phila.k12.pa.us "Shiva" <shiva***@hotmail.com> wrote in message news:cvb5l6$eg0$1@reader11.wxs.nl... > Hi, > > After installing a new telephone modem I wasn't able to start the computer > after pressing the on/off button. Nothing happened, as if there was no > power. > I pressed the power cable firmly and some other cables too. Suddenly the > computer started running, but it wasn't clear to me after which action. > The computer came up with the message "CMOS checksum error, BIOS defaults > loaded" and started windows xp. > After turning off the computer, I wasn't able to start the computer again. > I decided to open the case but I didn't notice any loose circuits or > something. > I reassembled the computer and guess what, it started running, but it > displayed the message "CMOS checksum error, BIOS defaults loaded" again! > > What confuses me is the CMOS-checksum error - if it is just a poor on/off > switch or something, then I do not expect such a error. After all, CMOS > does have its own battery to keep its values. > > Some more info: > - motherboard is a P6SET-ML > - Intel Celeron 600 Mhz processor > > Any idea's? > > Thanks in advance! > > > Jan Alter wrote:
> Measure the voltage to the battery with a multimeter and you'll know It is weird. I would never design a computer like a that, i.e. that it won't > whether or not it needs replacement. If you don't have a multimeter > try connecting a flashlight bulb and see if it lights. I've never > heard of a mb not powering up simply because the battery was dead, > but maybe it's possible. My experience with the infamous ECS K7S5A mb power up if the battery is dead. But it seems to be true for Hot wheel computers, read this link: http://www.applefritter.com/node/5297 It probably also applies to the P6SET-ML.. Show quoteHide quote > and its bios has taught me to avoid ECS completely. > >> Hi, >> >> After installing a new telephone modem I wasn't able to start the >> computer after pressing the on/off button. Nothing happened, as if >> there was no power. >> I pressed the power cable firmly and some other cables too. Suddenly >> the computer started running, but it wasn't clear to me after which >> action. The computer came up with the message "CMOS checksum error, >> BIOS defaults loaded" and started windows xp. >> After turning off the computer, I wasn't able to start the computer >> again. I decided to open the case but I didn't notice any loose >> circuits or something. >> I reassembled the computer and guess what, it started running, but it >> displayed the message "CMOS checksum error, BIOS defaults loaded" >> again! What confuses me is the CMOS-checksum error - if it is just a poor >> on/off switch or something, then I do not expect such a error. After >> all, CMOS does have its own battery to keep its values. >> >> Some more info: >> - motherboard is a P6SET-ML >> - Intel Celeron 600 Mhz processor >> >> Any idea's? >> >> Thanks in advance! "Shiva" <shiva***@hotmail.com> wrote in message Did you actually turn it off before mucking inside? Turned off at the BACKnews:cvb5l6$eg0$1@reader11.wxs.nl... > Hi, > > After installing a new telephone modem I wasn't able to start the computer > after pressing the on/off button. Nothing happened, as if there was no > power. of the computer or power plug removed? If not, you probably shorted something out. The PCI slots are ALWAYS on until the power is physically turned off at the PSU. It sounds like your CMOS settings got scrambled somehow > I removed the power plug before mucking inside the computer.> Did you actually turn it off before mucking inside? Turned off at the > BACK of the computer or power plug removed? > > If not, you probably shorted something out. The PCI slots are ALWAYS Yeah, due to a CMOS-battery that is nearly dead..> on until the power is physically turned off at the PSU. > > It sounds like your CMOS settings got scrambled somehow 
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